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ICD-10-CM 2027 diagnosis code

O90.3Peripartum cardiomyopathy

✓ Billable / specificMCC — major complication/comorbidityMaternity · age 9–64Female only

O90.3 is a valid, billable ICD-10-CM code for peripartum cardiomyopathy. It can be reported on claims for dates of service from October 1, 2026 – September 30, 2027.

Code unchanged since ICD-10-CM took effect on October 1, 2015. Source: official FY2027 ICD-10-CM release from CDC/NCHS and CMS. Page updated September 29, 2026. About our data

About O90.3

O90.3 is the ICD-10-CM diagnosis code for Peripartum cardiomyopathy. It belongs to category O90 (complications of the puerperium, not elsewhere classified), block O85-O92 (complications predominantly related to the puerperium) and chapter 15 (pregnancy, childbirth and the puerperium). It is billable, so it can be reported on its own for dates of service from October 1, 2026 through September 30, 2027.

Within O90 (complications of the puerperium, not elsewhere classified), O90.3 is specifically for Peripartum cardiomyopathy. Related codes cover disruption of cesarean delivery wound (O90.0), disruption of perineal obstetric wound (O90.1), hematoma of obstetric wound (O90.2), postpartum acute kidney failure (O90.4), postpartum thyroiditis (O90.5), postpartum mood disturbance (O90.6), other complications of the puerperium, not elsewhere classified (O90.8) and complication of the puerperium, unspecified (O90.9).

Don't report O90.3 together with the conditions in its Excludes1 note: pre-existing heart disease complicating pregnancy and the puerperium (O99.4-).

As a secondary diagnosis it is an MCC (major complication or comorbidity), which can move an inpatient stay into the highest-paying "with MCC" MS-DRG of its family, unless the principal diagnosis excludes it.

In MS-DRG v44.0, it is part of the grouping logic for DRG 769 (Postpartum and Post Abortion Diagnoses with O.R. Procedures, relative weight 1.6673) and DRG 776 (Postpartum and Post Abortion Diagnoses without O.R. Procedures, relative weight 0.6721), in MDC 14 (Pregnancy, Childbirth and the Puerperium), as a principal or secondary diagnosis. The DRG a claim lands in depends on the principal diagnosis, procedures and any CC/MCC secondary diagnoses.

The Medicare Code Editor treats this as a maternity diagnosis, expected only for patients age 9 through 64.

It is on the CMS list of diagnoses consistent only with female patients (the sex-conflict edit itself was retired in FY2025).

It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.

Before ICD-10, this condition was coded in ICD-9-CM as 674.52 (Peripartum cardiomyopathy, delivered, with mention of postpartum condition) and 674.54 (Peripartum cardiomyopathy, postpartum condition or complication).

Coding notes

Applicable toConditions and synonyms classified to this code
  • Conditions in I42.- arising during pregnancy and the puerperium
Excludes1Not coded here — never report together with this code
  • pre-existing heart disease complicating pregnancy and the puerperium (O99.4-)

Notes that apply from higher levels

Instructions written at a parent level also apply to O90.3.

Broader instructions also apply from O85-O92 Complications predominantly related to the puerperium and Chapter 15: Pregnancy, childbirth and the puerperium.

Alphabetic index entries

5 entries

Terms in the official ICD-10-CM index that lead to O90.3.

Codes whose notes reference O90.3

MS-DRG v44.0 grouping

All DRGs →

Inpatient MS-DRGs this diagnosis can group to, as the principal or a secondary diagnosis, depending on the rest of the claim.

MDC 14 · Pregnancy, Childbirth and the Puerperium

MDC 14 · Pregnancy, Childbirth and the Puerperium

ICD-9-CM equivalent

Converter →
  • 674.52Peripartum cardiomyopathy, delivered, with mention of postpartum conditionapproximate
  • 674.54Peripartum cardiomyopathy, postpartum condition or complicationapproximate

From the CMS 2018 General Equivalence Mappings (GEMs), the final GEMs release.

Code history

  1. 2016
  2. 2017
  3. 2018
  4. 2019
  5. 2020
  6. 2021
  7. 2022
  8. 2023
  9. 2024
  10. 2025
  11. 2026
  12. 2027
  • FY2016 (effective 10/1/2015): Added (first year of ICD-10-CM)
  • No changes since FY2016.

Common questions about O90.3

Is O90.3 billable?

Yes. O90.3 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).

Can O90.3 be used as a principal diagnosis?

Yes. The Medicare Code Editor doesn't restrict O90.3 as a principal diagnosis.

Is O90.3 a CC or MCC?

O90.3 is an MCC (major complication or comorbidity) under MS-DRG v44.0, unless excluded by the principal diagnosis.

What DRG does O90.3 group to?

O90.3 is used in the MS-DRG v44.0 logic for MS-DRG 769 (Postpartum and Post Abortion Diagnoses with O.R. Procedures) and MS-DRG 776 (Postpartum and Post Abortion Diagnoses without O.R. Procedures). Which one applies depends on whether it is the principal diagnosis and on the rest of the claim.

What is the ICD-9 code for O90.3?

The CMS General Equivalence Mappings map O90.3 to ICD-9-CM 674.52 and 674.54.